Operations Management
13th Edition
ISBN: 9780135173626
Author: HEIZER, Jay, RENDER, Barry, Munson, Chuck
Publisher: Pearson,
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Question
Chapter 10, Problem 2CS
Summary Introduction
Case summary:
Person K is the vice-president of operations at Company J, which received a request for quote of supplying 400 units per week. Employee must be permitted to perform the task for 17 times. The actual times observed were given below:
| Number | Actual time (minutes) |
| 1 | 2.05 |
| 2 | 1.92 |
| 3 | 2.01 |
| 4 | 1.89 |
| 5 | 1.77 |
| 6 | 1.8 |
| 7 | 1.86 |
| 8 | 1.83 |
| 9 | 1.93 |
| 10 | 1.96 |
| 11 | 1.95 |
| 12 | 2.05 |
| 13 | 1.79 |
| 14 | 1.82 |
| 15 | 1.85 |
| 16 | 1.85 |
| 17 | 1.99 |
Performance rating is 115%, fatigue allowance is given as 8%, personal allowance is 6%, and delay allowance is 2%. Workday hour is 7.5 hours and the operators would be paid $12.50 per hour for 8 hours.
To determine: Whether the
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Question 1
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Daily high temperatures in St. Louis for the last week were as follows: 92, 92, 94, 94, 95, 88, 95 (yesterday).
a) The high temperature for today using a 3-day moving average =
degrees (round your response to one decimal place).
b) The high temperature for today using a 2-day moving average =
degrees (round your response to one decimal place).
c) The mean absolute deviation based on a 2-day moving average = degrees (round your response to one decimal place).
%3D
d) The mean squared error for the 2-day moving average =
degrees (round your response to one decimal place).
e) The mean absolute percent error (MAPE) for the 2-day moving average = % (round your response to one decimal place).
QUESTION 2
South Africa Airways would like to monitor its airline's performance. Each week for the past 20 weeks, they checked each week a random sample of 100 flight arrivals for "one-time" performance. The table that follows contains the number of flights that did not meet South Africa Airways definition of "one time":
Week
Late flights
10
9
11 39103422822
10
11
12
13
14
15 16 17 18 19 20
19
2.1 Which control chart is appropriate to analyze the above data? Justify your answer.
2.2 Calculate the upper and lower control limits for this chart @ 99.73% confidence level.
2.3 Draw the chart and interpret it.
(3)
(10)
(9)
QUESTION 3
Two machines are currently in use in a process at a local manufacturing plant. The standards for this process are LSL 400 and USL .403. Machine One is currently producing with mean .401 and a standard deviation 0004. Machine Two is currently producing with mean = 4015 and a standard deviation = .0005.
3.1 Which of the…
Chapter 10 Solutions
Operations Management
Ch. 10 - Prob. 1DQCh. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Prob. 4DQCh. 10 - Prob. 5DQCh. 10 - Prob. 6DQCh. 10 - Prob. 7DQCh. 10 - Prob. 8DQCh. 10 - Prob. 9DQCh. 10 - Prob. 10DQ
Ch. 10 - Prob. 11DQCh. 10 - Prob. 12DQCh. 10 - Prob. 13DQCh. 10 - Prob. 14DQCh. 10 - Prob. 2PCh. 10 - Draw an activity chart for a machine operator with...Ch. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 1PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 30PCh. 10 - Prob. 31PCh. 10 - Prob. 32PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Prob. 36PCh. 10 - Prob. 37PCh. 10 - Prob. 33PCh. 10 - Prob. 39PCh. 10 - Prob. 40PCh. 10 - Prob. 41PCh. 10 - Prob. 42PCh. 10 - Prob. 44PCh. 10 - Prob. 1CSCh. 10 - Prob. 2CSCh. 10 - Prob. 3CSCh. 10 - Prob. 4CSCh. 10 - Prob. 2.1VCCh. 10 - Prob. 2.2VCCh. 10 - Prob. 2.3VCCh. 10 - Prob. 2.4VCCh. 10 - Prob. 1.1VCCh. 10 - Prob. 1.2VCCh. 10 - Prob. 1.3VC
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